package com.mohansever.tool;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.springframework.cglib.beans.BeanMap;

import com.mohansever.req.AddArticleMReq;
import com.mohansever.req.ArticleMReq;

public class Object2Map {
	
    /**
	 * 将对象装换为map
	 * @param bean
	 * @return
	 */
	public static <T> Map<String, Object> beanToMap(T bean) {
		Map<String, Object> map = new HashMap();
		if (bean != null) {
			BeanMap beanMap = BeanMap.create(bean);
			for (Object key : beanMap.keySet()) {
				map.put(key+"", beanMap.get(key));
			}			
		}
		return map;
	}

	/**
	 * 将map装换为javabean对象
	 * @param map
	 * @param bean
	 * @return
	 */
	public static <T> T mapToBean(Map<String, Object> map,T bean) {
		BeanMap beanMap = BeanMap.create(bean);
		beanMap.putAll(map);
		return bean;
	}

	/**
	 * 将List<T>转换为List<Map<String, Object>>
	 * @param objList
	 * @return
	 * @throws JsonGenerationException
	 * @throws JsonMappingException
	 * @throws IOException
	 */
	public static <T> List<Map<String, Object>> objectsToMaps(List<T> objList) {
		List<Map<String, Object>> list = new ArrayList();
		if (objList != null && objList.size() > 0) {
			Map<String, Object> map = null;
			T bean = null;
			for (int i = 0,size = objList.size(); i < size; i++) {
				bean = objList.get(i);
				map = beanToMap(bean);
				list.add(map);
			}
		}
		return list;
	}

	/**
	 * 将List<Map<String,Object>>转换为List<T>
	 * @param maps
	 * @param clazz
	 * @return
	 * @throws InstantiationException
	 * @throws IllegalAccessException
	 */
	public static <T> List<T> mapsToObjects(List<Map<String, Object>> maps,Class<T> clazz) throws InstantiationException, IllegalAccessException {
		List<T> list = new ArrayList();
		if (maps != null && maps.size() > 0) {
			Map<String, Object> map = null;
			T bean = null;
			for (int i = 0,size = maps.size(); i < size; i++) {
				map = maps.get(i);
				bean = clazz.newInstance();
				mapToBean(map, bean);
				list.add(bean);
			}
		}
		return list;
	}
	
	public static void main(String[] args) {
		AddArticleMReq aamReq = new AddArticleMReq();
		aamReq.setUserId("123456");
		aamReq.setToken("123456789");
		ArticleMReq aM = new ArticleMReq();
		aM.setTitle("123");;
		aamReq.setArticle(aM);
		Map<String, Object> map = beanToMap(aamReq);

		for (Map.Entry<String, Object> entry : map.entrySet()) {
		    System.out.println("Key = " + entry.getKey() + ", Value = " + entry.getValue());
		}
	}
}
